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Fencer Vulns
medium 5.5

CVE-2024-24246 json

Heap Buffer Overflow vulnerability in qpdf 11.9.0 allows attackers to crash the application via the std::__shared_count() function at /bits…

published 2024-02-29 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-21670

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits
0
none known

Summary

Heap Buffer Overflow vulnerability in qpdf 11.9.0 allows attackers to crash the application via the std::__shared_count() function at /bits/shared_ptr_base.h.

Patch / fix

  • qpdf Debian 14, Debian 13 11.9.0-1

debian advisories DEBIAN-CVE-2024-24246

  • qpdf Alpine 3.24, Alpine 3.23, Alpine 3.22 +2 more 11.9.1-r0

alpine advisories ALPINE-CVE-2024-24246

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-24246 updated cvss 7.5

qpdf: Heap Buffer Overflow vulnerability in qpdf

  • Red Hat Enterprise Linux 7 qpdf, qpdf-libs
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 qpdf, qpdf-libs Red Hat Enterprise Linux 9 qpdf, qpdf-libs
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/qpdf/qpdf/issues/1123 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • qpdf_project qpdf
  • fedoraproject fedora

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.